Pipe-boring machine



No. 607,820. Patented July 26, I898.

B. C. BATCHELLER.

PIPE BORING MACHINE.

Application filed Nov. 27, 1897.) (No Model.) 3 SheetsSheet l.

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B. G. BATCHELLER.

PIPE BORING MACHINE. (No Model) (Application filed Nov. 27, 1897.

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PIPE BORING MACHINE.

(Application filed. Nov. 27, 1897.)

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BIRNEY C. BATOHELLER, OF PHILADELPHIA, PENNSYLVANIA.

PIPE-BORING MACHINE.

SPECIFICATION forming part of Letters Patent No. 607,820, dated July 26, 1898.

Application filed November 27,1897. erial No. 659,942. (No model.) I

To a whom, it may concern;

Be it known that LBIRNEY O. BATCHELLER, a citizen of theUnited States of America, residing in the city and county of Philadelphia, in the State of Pennsylvania, have invented a certain new and useful Improvement in Pipe-Boring Machines, of which the following is a true and exact description, reference being had to the accompanying drawings, which form a part thereof.

My invention relates to mechanism for boring pipessuch, for instance, as are used in pneumatic-pipe mains.and has for its object to provide an accurate, simple, and effective tool for this purpose.

The nature of my improvements will be best understood as described in connection with the drawings in which they are illustrated and in which- Figure 1 is a front elevation of my improved machine; Fig. 1, an attachment for the top of the machine, omitted for lack of space in Fig. 1. Fig. 2 is a side elevation of the ma- 1 chine; Fig. 2, an attachment for the head 5 invention, taken as on the section-line 2 2 of Fig. 1. Fig. 4 is a cross-sectional view on the line at 4 of Fig. 3. Fig. 5 is an enlarged sectional view through the upper part of the machine, taken as on the section-line l 1 of Fig. 1. Fig. Gisaplan view of the grip holding the upper portion of the pipe and the devices for adjusting the same; and Fig. '71s a cross-sectional view of this adjusting device, taken on the section-line 3 3 of Fig; 5.

A indicates the flooring, above which is sit uated the framing 13, supporting the upper portion of the machine, while, as shown, the pedestal is situated below the flooring. Formed with or secured to the frame B is the platform 0, having, as shown, a guideway 0' formed in it and on each side of the guideway perforated lugs, as indicated at C to give passage to the bolts G.

D is a slide resting on the platform C and having a tongue or rib D, fitting in the guideway C. The slide D is formed with a guideway D running in a transverse direction to the guideway O, and -is also provided with slotted perforations D through which the bolts G can pass. A rearwardly-extending arm D and an adj Listing-screw E enable the slide D to be set forward or backward at will.

F is a slide resting on top of the slide D and provided with a tongue or projection F, fitting in the guideway D The slide F is also provided, as shown, with slotted perforations'F through which the bolts G project, and is adjusted from side to side by means of the set-screws H II. (Best shown in Figs. 1 and 2.) Secured to a forwardly-projecting portion of the slide F is the pipe-gripping device, (indicated at I I,)the portion I being separable from the head, as shown, and held thereto by means of bolts 1 I In practice the pipe-gripping device I I i secured about the upper end of the pipe, the lower end of which is secured in another gripping device to be hereinafter described, and the pipe is then adjusted by means of the slide D and the slide F, so as to make its alinement with the boring-tool perfect. Of course the limitations of adjustment are thus imposed by the length of the slots F and D (see Figs. 6 and 7,) and of course, also, a proper adjustment being once attained little or no adjustment will be necessary for the proper alining of other pipes of the same size.

J indicates the main driving-shaft of the machine, having, as shown, a bearing in aportion 13 of the frame B and having attached to'its outer end fast and loose pulleys (indicated at J and J and to its inner end a miterwheel. (Indicated at J This miter-wheel engages with a miter-wheel K, secured on a vertical shaft K, having a bearing (indicated at B and having at its upper end the spurwheel K which is in engagement with the gear-wheel L, secured to a hub L, which by means of a feather L working in a longitudinal slot (indicated at L) of a shaft L rotates said shaft while permitting it to move freely up and down,the shaft having, as shown, bearings to preserve its alinement at B and B. At the upper end of the shaft L (see Fig. 1) is a shackle L, from whichthe shaft is suspended by means of a rope L passing over pulleys L L and having a counterweight L (see Figs. 1 and 2) attached to its free end. Rearward projections L from the shackle L are in engagement with a guiding-bar L which assists in holding the shaft in proper position and also prevents any tendency of the shackle to turn with the shaft, L indicating stay-rods for holding the bar L in position.

M is the hub of a grooved pulley, the rim of which is indicated at M, the hub turning freely on the shaft L and being formed so as to be readily engaged by a clutch M said clutch being splined to the shaft L so as to turn with it and so that when in engagement with the hub M it will also turn the grooved pulley. ing to engage and disengage the clutch M from the pulley-hub M.

Passing now to the pedestal, which is indicated by the symbol N, N is a shaft having a bearing in the pedestal and also in the bracket Q the shaft N carrying a miterwheel N which engages the miter-wheel R, the hub R of which is, as shown, supported on the enlarged and flanged lower end S S of a hollow threaded cylinder S, which passes through a central opening in a portion N of the pedestal and is secured thereto by the nut S Below the hub R of the miter-wheel R and cast with or firmly secured thereto run guideways R R upon which rest the inter nal threaded sections T T, the threaded portions being indicated at t and the two sections being held together and clamped upon the threaded rod P by means of the bolts T T. (See Fig. 4:.) At the upper end of the pedestal N is the cup-shaped support N upon which the lower end of the pipe is rested and in which it is adjusted to a proper center by means of the adjusting-screws N S inclicates a feather in the cylinder S, which lies in a longitudinal groove 33 in the threaded rod P and which said rod is engaged by the end sections T T and by means of which feather the rod is prevented from turning in the pedestal. I

Motion is communicated to the shaft N from the grooved pulley M M by means of the rope C), which passes first over a pulley Q, then under a pulley Q, upon which is supported a counterweight (1, then over a second pulleyq in line with the pulley Q, and then under a pulley (indicated at Q secured to theshaft N, and thence back over a pulley (9,, Fig. 1, to the pulley M M. p

0 indicates the boring-tool, which may be of any convenient construction andis secured to the lower end of the shaft L while to the lower end of the boring-tool by means of a head P, which can turn freely in the tool, is secured the threaded rod P, the attachment being indicated at P At U, I have indicated an opening or tube through which the rod P can pass.

The operation of the tool as a whole will be readily followed. I have already described the means and method of adjusting the upper end of the pipe and have stated that the lower end is adjusted in the cupshaped receptacle at the top of the pedestal by means of the adj usting-screws N The pipe M is alever pivoted at M and serv-' being in proper alinement, the shaft L is rotated by the mechanism described, causing the boring-tool O toturn. The lever M is then actuated to engage the clutch M with a pulley-hub M, thereby transmitting motion through the rope'gear and mechanism described to the miter-wheel R and to the sectional nut T T, supported on said miterwheel'. The rotation of this end which is in engagement with the threaded rod P draws it and the boring-tool O gradually downward through the pipe, there being little or no weight to influence the motion of the boringtool as the counterweight L supports the weight of the moving parts suspended upon it. When the pipe is completely bored, the bolts T are relaxed, permitting the nut-sections T T to move apart and the rod P to be moved rapidly upward, carrying with it, of course, the boring-tool. As the threaded feed-rod P is moved down by the action of the nut T T it is apt to carry more or less of the metallic particles cut off by the tool 0 with it, which will tend to cut away the threads of the nut, and to avoid this I have found it desirable to form longitudinal recesses t t through the threads of the nut-section, through which said particles can and will escape and which will keep the 11 ntthreads from being cut away.

Having now described my invention, what I claim as new, and desire to secu re by Letters Patent, is

1. In a machine for boring pipes the combination with a boring-tool as O, and means connected at its rear end for turning said tool, of a feed-screw, as P, connected to the tool in-position to extend through the pipe in advance thereof, said feed-screw being so connected to the tool as to move longitudinally with it while being unaffected by its rotative movement, a pipe-rest, as pedestal N, a feed-nut as T T adapted to engage the feed-screw P and means secured in the piperest for actuating said nut and causing the tool 0 to feed through the pipe. Y

2.- In a machine for boring pipes the combination with a boring-tool, as O, and means for turning said tool connected at its rear end, of a feed-screw, as P, connected to the tool in position to extend through the pipe in advance thereof, said feed-screw being so connected to the tool as to move longitudinally with it while being unaffected by its rotative movement, a pipe-rest,as pedestalN, a feed-nut as T T adapted to engage the feed-screw P and means secured in the pipe-rest and driven synchronously with the mechanism for turning the tool for actuating said nut and cansing the tool 0 to feed through the pipe.

3. In a machine for boring pipes the combination with a vertically-movable boring-tool as O, and means for turning said tool connected at its rear end, of a feed-screw, as P, depending from said tool, said feed-screw be ing so connected to the tool as to move longitudinally with it while being unaffected by its IIO rotative movement, a pedestal, as N, adapted to serve as a rest for the lower end of the pipe and situated below the tool 0, a feed-nut as T T adapted to engage screw P, means secured in the pedestal for rotating said nut to cause the tool to feed through the pipe.

4. In a machine for boring pipes the combination with a vertically-movable boring-tool, as 0, means for counterbalancing, and means for turning said tool, of a feed-screw, as P, depending from said tool, a pedestal, as N, adapted to serve as a rest for the lower end of the pipe and situated below the tool 0, a feednut as T T adapted to engage screw P, means secured in the pedestal for rotating said nut to cause the tool to feed through the pipe.

5. In a machine for boring pipes substantially as described a pedestalN having a piperest platform N and means for centering the pipe thereon, in combination with a feedscrew P, means for engaging said screw to prevent its turningin the pedestal but without interfering with its longitudinal movement, a feed-nut adapted to engage screw P supported on the pedestal, and means for rotating said nut.

6. In a machine for boring pipesa pipe-rest platform N and means for centering the pipe thereon, in combination with a feed-screw P, means for engaging said screw to prevent its turning in the pedestal, but Without interfering with its longitudinal movement, a gearwheel R having nut-bearings as R a split feed-nut as T T secured in said bearings, means as bolts T for securing the parts of the feed-nut together, and means for rotating gear-wheel R.

7. In a machine for boring pipes, apipe-rest platform N and means for centering the pipe thereon, in combination with a feed-screw P,

means for engaging said screw to prevent its turning in the pedestal, but without interfering with its longitudinal movement, a gearwheel R having nut-bearings as R a split feed-nut as T T having one or more longitudinal recesses as t if out through its threads, secured in said bearings, means as bolts T for securing the parts of the feed-nut together, and means for rotating gear-wheel R.

8. In a machine for boring pipes, a pipe-rest platform as N and means for centering a pipe end thereon, in combination with a pipeclamp as I I, clamp-adjusting slides D and F arranged to give said clamp a universal mo tion, .means for clamping said slides together and to the frame of the machine to secure the clamp and pipe in a determined position,'a boring-tool and means secured on the frame for rotating said tool, a feed-screw secured to the tool so as to be unaffected by its rotation, and a feed-nut connected with the pedestal aforesaid for engaging the feed-screw and moving it and the boring-tool longitudinally.

9. In a machine for boring pipes substantially'as described, the combination with a vertically-movable boring-tool a frame and mechanism for guiding and rotating said tool, a pedestal for supporting the lower end of the pipe, mechanism situated in said pedestal for longitudinally feeding the boring-tool, a pulley and rope belt system for transmitting motion from the mechanism for rotating the tool to the pedestal, mechanism for feeding said tool and a'clutch for engaging and disengaging said mechanism.

BIRNEY G. BATOIIELLER.

Witnesses:

CHAS. F. MYERs, D. STEWART. 

